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Table 5 Ventricular functions (EF), duration of mechanical ventilation (h), postoperative need of inotropes, auto-re-beat ratio, length of ICU stay (days), length of hospital stay (days), postoperative AF

From: Perioperative beta-blocker and its effect on coronary artery bypass graft patients outcome after surgery

Ventricular functions (EF%) Control group (n= 25) Study group (n= 25) ttest pvalue
 Intraoperative by TEE 53.42 ± 5.70 58.46 ± 4.92 3.347 0.002*
 Postoperative by TTE 52.47 ± 3.42 57.51 ± 4.56 4.421 < 0.001**
Length of mechanical ventilation (h) Control group (n= 25) Study group (n= 25) ttest pvalue
Mean ± SD 12.16 ± 3.50 10.83 ± 2.92 1.291 0.078
Post-operative need of inotropes Control group (n= 25) Study group (n= 25) χ2 pvalue
 Needed 23 (92%) 20 (80%) 0.664 0.415
 Not needed 2 (8%) 5 (20%)
Auto-re-beat ratio Control group (n= 25) Study group (n= 25) χ2 pvalue
 Auto-re-beat 12 (48%) 18 (72%) 6.083 0.048*
 The rest 13 (52%) 7 (28%)
Length of ICU stay (days) Control group (n= 25) Study group (n= 25) ttest pvalue
Mean ± SD 3.05 ± 1.14 2.18 ± 1.16 2.675 0.011*
Length of hospital stay (days) Control group (n= 25) Study group (n= 25) ttest pvalue
Mean ± SD 9.16 ± 2.28 7.62 ± 2.32 2.367 0.022*
Postoperative AF Control group (n= 25) Study group (n= 25) χ2 pvalue
 Yes 10 (40%) 5 (20.0%) 3.481 0.027*
 No 15 (60%) 20 (80.0%)
  1. t independent sample t test, χ2 chi-square test
  2. p value > 0.05 NS
  3. *p value < 0.05 S
  4. **p value < 0.001 HS
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